IEEE HIC 2012 Paper Abstract


Paper ThCT3.8

Fernandes, Luís André (Vestfold University College), Häfliger, Philipp (University of Oslo, Department of Informatics), Azadmehr, Mehdi (Vestfold University College), Johannessen, Erik A. (Vestfold University College, Department of Micro and NanoTechnol)

Design and Characterization of an Osmotic Sensor for the Detection of Events Associated with Dehydration and Overhydration

Scheduled for presentation during the Poster Session "Poster Session-New Applications" (ThCT3), Thursday, November 8, 2012, 17:30−19:30, Research Institute-Mezzanine

First IEEE Healthcare Technology Conference: Translational Engineering in Health & Medicine, November 7-9, 2012, Methodist Hospital Research Institute, Houston, TX

This information is tentative and subject to change. Compiled on May 25, 2020

Keywords Nano Medicine, Global Health, Aerospace and Harsh Environments


The level of hydration in the human body is carefully adjusted to control the electrolyte balance that governs the biochemical processes that sustain life. An electrolyte deficiency caused by de- or overhydration will not only limit the performance of say an athlete, or a professional, but lead to serious health problems and death if left untreated. Since humans can withstand a change in hydration of only +/-20%, frequent monitoring should be performed in risk groups. This article presents an osmotic hydration sensor which can record the level of hydration as a function of osmotic pressure in a sodium-chloride solution that simulates the interstitial fluid in the body. The osmotic pressure is recorded by the aid of an ion-exchange membrane that facilitates the migration of water and cations, in favor of RO or gas separation membranes. The hydration sensor is designed to be coupled to an inductively powered read out integrator circuit that has previously been shown to consume up to 76µW of power. The dynamic range spans a state of serious overhydration (220 mOsm L-1) to a serious state of dehydration (340 mOsm L-1) with a response time of approximately 7 hours (for ∆hydration = 20%).



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